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Allied Telesis
8PS, AT-GS900/8PS
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Chapter 3: Troubleshooting
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Contents
Main
Page
Electrical Safety and Emissions Standards
C-TICK CE
Page
Contents
Page
Figures
Page
Tables
Page
Page
Symbol Conventions
Contacting Allied Telesis
Page
Chapter 1
Overview
Features
General
Twisted Pair Ports
LEDs
PoE Ports
Page
Front and Back Panels
Twisted Pair Ports
Cable Specifications
MDI/MDI-X Mode
Auto-Negotiation Mode
Flow Control and Back Pressure
Page
LEDs
Page
Page
Power Over Ethernet
PoE Standards
PoE Powered Device Classes
PoE Power Budget
PoE Port Prioritization
PoE Guard Band
Exceeding PoE Power Budget
Page
Wiring Implementation
Power Supply
Chapter 2
Installation
Reviewing Safety Precautions
Page
Selecting a Site for the Switch
Unpacking the Switch
Page
Installing the Switch on a Desktop
Installing the Switch in an Equipment Rack
Page
Installing the Switch on a Wall
Page
Page
Installing Optional SFP Transceiver
Page
Cabling the Switch
Powering On the Switch
Chapter 3
Troubleshooting
Power LED OFF
Twisted Pair Port LINK/ACT LED Off
SFP Port LINK/ACT LED Off
Slow Network Performance
LINK/ACT LED Intermittently Blinking
Powered Device Not Receiving Power
Resetting Blinking PoE Port LED
Page
Appendix A
Technical Specifications
Power Specifications
Physical Specifications
Environmental Specifications
PoE Specifications
Safety and Electromagnetic Emissions Certifications
Connectors and Port Pinouts